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Basic study on correction method of measured earthing resistance by 4-potential method
Ueta Saki,Takahashi Takehiko 한국조명·전기설비학회 2008 한국조명·전기설비학회 학술대회논문집 Vol.2008 No.10월
The full of potential method is generally used for measuring the earthing-resistance. This method needs two auxiliary electrodes and it is required that two auxiliary electrodes are placed at enough distances from the earthing electrode, e.g. building foundation. However, in urban area there is not enough space for taking measurement. So, it is very difficult to measure the earth resistance precisely. However, there is the 4-potential method when it stand on the theory of the full of potential method. It is the purpose of this paper to basic study on correction method of measured earthing resistance by 4-potential method.
Ueta, M.,Sawai, H.,Shingaki, R.,Kawai, Y.,Sotozono, C.,Kojima, K.,Yoon, K. C.,Kim, M. K.,Seo, K. Y.,Joo, C. K. Springer Science + Business Media 2017 Journal of human genetics Vol.62 No.4
<P>A genome-wide association study (GWAS) for cold medicine-related Stevens-Johnson syndrome (CM-SJS) with severe ocular complications (SOC) was performed in a Japanese population. A recently developed ethnicity-specific array with genome-wide imputation that was based on the whole-genome sequences of 1070 unrelated Japanese individuals was used. Validation analysis with additional samples from Japanese individuals and replication analysis using samples from Korean individuals identified two new susceptibility loci on chromosomes 15 and 16. This study might suggest the usefulness of GWAS using the ethnicity-specific array and genome-wide imputation based on large-scale whole-genome sequences. Our findings contribute to the understanding of genetic predisposition to CM-SJS with SOC.</P>
Ueta, M.,Sawai, H.,Sotozono, C.,Hitomi, Y.,Kaniwa, N.,Kim, M.K.,Seo, K.Y.,Yoon, K.C.,Joo, C.K.,Kannabiran, C.,Wakamatsu, T.H.,Sangwan, V.,Rathi, V.,Basu, S.,Ozeki, T.,Mushiroda, T.,Sugiyama, E.,Maekaw Mosby 2015 The Journal of allergy and clinical immunology Vol.135 No.6
Background: Stevens-Johnson syndrome (SJS) and its severe form, toxic epidermal necrolysis (TEN), are acute inflammatory vesiculobullous reactions of the skin and mucous membranes, including the ocular surface, oral cavity, and genitals. These reactions are very rare but are often associated with inciting drugs, infectious agents, or both. Objective: We sought to identify susceptibility loci for cold medicine-related SJS/TEN (CM-SJS/TEN) with severe mucosal involvement (SMI). Methods: A genome-wide association study was performed in 808 Japanese subjects (117 patients with CM-SJS/TEN with SMI and 691 healthy control subjects), and subsequent replication studies were performed in 204 other Japanese subjects (16 cases and 188 control subjects), 117 Korean subjects (27 cases and 90 control subjects), 76 Indian subjects (20 cases and 56 control subjects), and 174 Brazilian subjects (39 cases and 135 control subjects). Results: In addition to the most significant susceptibility region, HLA-A, we identified IKZF1, which encodes Ikaros, as a novel susceptibility gene (meta-analysis, rs4917014 [G vs T]; odds ratio, 0.5; P = 8.5 x 10<SUP>-11</SUP>). Furthermore, quantitative ratios of the IKZF1 alternative splicing isoforms Ik1 and Ik2 were significantly associated with rs4917014 genotypes. Conclusion: We identified IKZF1 as a susceptibility gene for CM-SJS/TEN with SMI not only in Japanese subjects but also in Korean and Indian subjects and showed that the Ik2/Ik1 ratio might be influenced by IKZF1 single nucleotide polymorphisms, which were significantly associated with susceptibility to CM-SJS/TEN with SMI.
Multifaceted Phonological Characteristics of /g/ in Mongolic Languages
Naoki Ueta 한국알타이학회 2022 알타이학보 Vol.- No.32
The /g/ sound is a common sound in Mongolic languages. However, its phonetic and phonological status is not necessarily clear. This study claims that the Mongolic /g/ has characteristics of obstruent, sonorant, and glide, and whether /g/ is closer to obstruent or to glide varies across languages. This complexity is manifested by its phonetic realization, coda constraint, and behavior as an epenthetic consonant. In some Mongolic languages, /g/ is normally realized as a stop, which is a typical segment of obstruents, while the intervocalic /g/ can be pronounced with voicing and spirantization, as well as with clear formant structure, like a sonorant or glide. As for the coda constraint, some languages prohibit /g/ from occurring at the coda position, although the languages permit sonorant codas. On the contrary, in other languages, /g/ can form a coda with the following consonant, which is more parallel to sonorants than to obstruents. Moreover, in many Mongolic languages, /g/ is epenthesized between two vowels in order to avoid a hiatus. This behavior of /g/ can be explained by supposing that /g/ is phonologically a glide with no place feature.
( Naoki UETA ) 한국알타이학회 2021 알타이학보 Vol.- No.31
The Mongolian language has an aspiration contrast in stops and affricates. The contrast in the word-initial position is adequately characterized by voice onset time (VOT) differences. In addition, some other acoustic characteristics, such as F0 and F1 in the following vowel, help to distinguish between aspirated and unaspirated consonants. However, it is unclear whether or to what extent VOT and the following vowel affect the perception of aspiration contrast in Mongolian. The present study carried out a perceptual experiment using three types of stimulus sounds and found that: (i) VOT alone cannot distinguish between aspirated and unaspirated consonants; (ii) following vowels significantly affect the distinctions derived between aspirated and unaspirated consonants; and (iii) following vowels are more effective than VOT in distinguishing aspirated and unaspirated consonants. These results confirm that the influence of acoustic features of the following vowel can contribute to the distinctions derived between aspiration contrasts in Mongolian from the perspective of perception.
Fumihiko Ogata,Erimi Ueta,Naohito Kawasaki 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.59 No.-
In the present study, we prepared a newly adsorbent, Iron–Magnesium-type hydrotalcite (FHT), at different molar ratios (FHT3.0; Mg2+/Fe3+ = 3.0 and FHT5.0; Mg2+/Fe3+ = 5.0) for removing heavy metal ions. Characteristics of FHT and arsenite (As(III)) and hexavalent chromium (Cr(VI)) adsorption capability onto that were evaluated. Amount adsorbed of As(III) and Cr(VI) increased with raising temperatures. Amount adsorbed of heavy metal ions onto FHT in the single liquid phase was smaller than that in the mixed liquid phase, which suggests that the amount adsorbed was affected by the adsorbent properties, interlayer space, and solution pH.